I have not read the new books per-se. I have been following the material on DDI and reading preview material and, from the looks of things, the Heroes of the Feywild looks really good, and the Book of Vile Darkness... doesn't look eye-stabbingly terrible. I've not heard much about Gradmore Abbey, and while MME has a lot of really cool stuff in it, up until the start of the month, also had some hilariously broken stuff in it. I've not heard much from Neverwinter story-wise, other than its more or less useless to me right now since its HEROIC-TIER ONLY, and Bladesingers are a jank class that can become a fairly hardcore striker... if they ignore 90% of the abilities they use and instead twink out a few features for extra damage. This gets worse by the fact that they're MEANT to be a controller. The monster books so far look absolutely great, but the less said about Heroes of Shadow the better...
So, all in all its a giant mixed bag, and while the last few months look to be fairly good, the fact of the matter is that we're only just now getting back to the level of quality of this time last year, when we had Dark Sun, the Demonicon, The Plane Above, The Underdark, The Tomb of Horrors, and PHB3 all rocking the scene, all of which were really great books. After that we spent more or less an entire year waiting for a book that either A) didn't suck, B) wasn't redundant, or C) supported more of the game than heroic and (maybe) paragon tier. WotC isn't hitting its stride, its finally managing to catch up to where it was before it dropped the damn ball.