This (very short) preliminary review covers the re-release of the PHB, from July 6, 2015.
Overall, this is much better in many ways than the original 2007 release. While I'd personally prefer the full original cover, I appreciate the new text layout. Cutting and pasting works well from the PDF to MS Word 2013, which will help when I want to create spell books for characters. The only downside is the same as the physical release of the premium hardback: some of the scans are a bit dodgy/pixelated, notably the "Magic Mouth" full page art. However, this is a minor issue. One bonus: I didn't have to re-purchase this, as I had previously done so in 2007.
Thank you WotC and OBS, for making the best version of D&D available again. I hope the the MM, DMG, and UA follow, along with the original rules, supplements, and chainmail are to follow!
[4 of 5 Stars!]