No, not currently, at least not without "hacks"; however, I can write
a
short something to give an RSS feed. Not that an RSS feed is needed since the roundcube.net site should host that seeing as it's the
"home"
of Roundcube. And phpBB is a much more powerful piece of software. I've worked with vanilla, SMF, IPB, vB, phpBB, UltraBB and many
others.
I find phpBB to be the best (in all respects) and as the next version
is
coming down the line, it's only going to get better. I've seen the
CVS
of phpBB 3 (Olympus) and many of the issues that people complained
about
where answered.
The best out there is vBulletin (http://www.vbulletin.com/). But it is "payware". I have also tried them all.
Cheers,