To quote: Today marks the release of Showtime 3.4. For a list of most of the important bug fixes and features added, see the 3.4 page. Download the release from github.
Note: It seems Showtime still suffers from out of memory conditions now and then but I've not been able to pinpoint the exact cause of those issues. A few things were implemented just prior to the 3.4 release in order to mitigate the low memory problems.