The JTA/JTS components of JBossTS have been relatively stable for about 5 years. JCA support/transaction inflow and general improvements to recover and manageability mark what has happened in that codebase. The main developments in JBossTS have been around Web Services transactions (BTP support for a start, WS-CAF and now WS-T). There is still more work to be done there, along with JSR 156, end-to-end transactions (transaction bridging) and more tools (you can never have enough tools).
Thank you for your prompt reply. Is good to know that the Core part of JBossTS is so stable, because it makes a good candidate to build higher abstractions above it (like you did with JTA, JTA and WS).
One more question: any plans about migrating tools to eclipse ?
There are always plans ;-) Just enacting them can sometimes be an issue.