

A: This site says availability is expected to begin on Feb 26. That'll probably coincide close to when Best Buy gets stock of it, though I don't know precisely. http://www.pcworld.com/article/3154010/computers/hps-2017-15-inch-spectre-x360-features-two-surprising-changes.html However, be aware that the '4K' display last year's HP Spectre x360 15 was fake, and it's possible this model also uses a fake 4K display. The display HP used in the 2016 HP Spectre x360 15 used the RG/BW Pentile matrix to cheat the ability to advertise the 4K UHD 3840x2160 resolution, without actually providing the full detail of the resolution. These false 4K displays actually look worse than "lower resolution" (3K 2880x1620, QHD+ 3200x1800, etc.) displays, all while unnecessarily stressing the graphics card to render a full 3840x2160 picture. https://www.reddit.com/r/Hewlett_Packard/comments/5lvjva/psa_dont_preorder_the_2017_spectre_x360_15_4k/ I would advise waiting until reviews for this model come in, confirming the display to be true 4K. Don't buy until you know that. If you don't want to wait that long, the Lenovo Yoga 710 is known to use a 100% honest true 4K display. http://www.bestbuy.com/site/lenovo-2-in-1-15-6-4k-ultra-hd-touch-screen-laptop-intel-core-i7-16gb-memory-nvidia-geforce-gtx-940mx-256gb-ssd-pearl-black/5579132.p?skuId=5579132 (you won't notice a difference between the i5-7200U and i7-7500U processors since both are dual-core CPUs within a few percentage points of each other -- they're just branded with different numbers that make them sound like there's more of a difference, and you can always buy your own 512GB SSD to replace the 256GB one with, for less than the price difference between these two laptops.)
A: Best Buy gets HP laptops with specific model numbers that other manufacturers don't get. Same with Dell laptops. I'm not certain why they do it, but I suspect it is so you can't comparison shop. Most retailers offer a price match guarantee on the same product, but since nobody sells the same HP or Dell product that Best Buy does, and vice-versa, nobody has to honor any price match guarantees. Manufacturers do it with mattresses too. A Certa at Sams Club is not going to be the same model number as the EXACT SAME MATTRESS at Costco, or a furniture store. Every retailer gets their own model numbers.
A: The 15 inch Spectre X360 is (a bit) heavier than the 13, but the additional screen size is a plus when working on artwork/viewgraphs/decks etc. What surprised me was, that, the Adobe PS software had almost microscopic sized text/tools when viewed in the high resolution display of the Spectre X360 15 inch. I did not see this in other software that used the pen. The color and usable viewing angle of the display is remarkably good. The 15 has more I/O ports than the 13 and also a SD card slot which helps if you are working on photos from your digital camera. There is a Nvidia internal GPU card that is CUDA compatible so you could (theoretically) run deep learning algorithms on it (tensor flow etc.). Sound is good from internal speakers, with enough volume to enjoy YouTube University e-learning or just video. I enjoy running/viewing dreamscopeapp.com with the color fidelity. Let me know what you think if you get one. Ajax
A: Yes, it is the bigger option of that same computer. However there is 1 difference and 3 extra features. The 1 difference is this comes in a different color. It's like a very dark aluminum brown (looks dark grey from a distance) with copper trim. The 3 extra features is it has a stylus pen, a 4K display, and an Nvidia graphics card. So the extra couple hundred gets you those 3 extra features and a bigger size. It's worth it if you want to play some moderate gaming or do video editing or photo editing. Ifyou don't plan on doing any of those 3 then go for the smaller version.
Q: Is the graphics card going to be up gradable to the 10 series Nvidea graphics ?
A: No, this laptop comes only with NVIDIA GeForce 940MX graphics.
Q: Can you write on a PDF document or an attachment with the stylus?
A: I don't own this computer, but I can confirm that you can effectively mark up a PDF document using any Windows 10 PC that supports a digital pen. This would include, of course, the latest HP Spectre x360 15-inch (and 13-inch) models. On my Surface Pro 3, I use the Drawboard PDF viewing app ($6) for this function. But you can also use lots of other apps for inking (fancy word for using a PC and digital pen as if they were a "real" pad of paper and pen), including the EDGE browser built into Windows 10. This capability is one of the most important reasons I would buy a 2-in-1 PC today instead of a traditional laptop.
A: Nope - no extra room for a 2nd internal storage drive. This specific machine comes with a Samsung PM961 Polaris 512GB M.2 NGFF PCIe Gen3 x4, NVME Solid state drive SSD, OEM (2280) (MZVLW512HMJP-00000). If you go to the HP website you can configure the HP Spectre x360 with a 1TB M.2 PCle SSD. And the external SD card reader slot can accept any capacity SD card but don't be fooled by cheap versions of SD card vendors - stick with name brands and do your research.