The weekly Marvel True Believers sale additions bring it up to ten books.
https://www.comixology.com/Marvel-Tr...Sale/list/6134
The Avengers Collections sale is expanded into an Age of Ultron sale ending 5/3/15. It combines 24 singles with those ten collections. The only new to saledom (that's a word, right?) books are What If Age of Ultron 1-5.
https://www.comixology.com/Avengers-...Sale/page/6450
The normal sale page has some new foreign sales, including a new freebie.
https://www.comixology.com/comics-sale
I thought I was good at finding all the random freebies, but it appears that this preview somehow slipped my ~weekly searches for two years.
https://www.comixology.com/Benny-Bre...al-comic/40583