Stross Halting State- yes. Heinlein - only a few (6 or 7, I think). Asimov - about 30 or so books kindlized.
The way it seems to be working is that a lot of new books, particularly SF and Mystery/Thrillers, are coming out on Kindle at or near the time of paper publication. Some older books are becoming available as publishers catch on. There are also a fair number of free, out of copyright books, classics and such, available in kindle version.
Recent discussions in the Science Fiction forum
AnnouncementRead fresh new science fiction stories - and help take them to the next level
|8||5 days ago|
AnnouncementImportant announcement from Amazon
|190||Jul 2, 2014|
AnnouncementNew Star Wars Release: The Jedi Path now available. Read the author's insider notes...
|29||Sep 24, 2014|
|It's August 2015. What sci-fi book are you reading?||7||1 hour ago|
|Too many female authors flooding sci fi , fantasy books||274||18 hours ago|
|How about LitRPG (MMO-based virtual reality books)?||66||1 day ago|
|Looking for Recommendations - Dystopian reading||36||3 days ago|
|Stories that are kindof-sortof about evolution / ecology||23||3 days ago|
|Books having to do with Robots and what it is to be human?||24||3 days ago|
|Your Favorite Science-Fiction books and films of the year?||46||4 days ago|
|It's July 2015. What sci-fi book are you reading?||12||5 days ago|
|Need some recommendations on Military sci fi books||123||5 days ago|