It is not out yet, it will appear here:
The SVN has been tagged though, if no major problem has been detected alpha2 will be the same as what is tagged.
If you use the tagged version and spot a major issue please let us know.
what time the jboss portal alpha 2 Release , and I can download it
QA process needs to finish and then mirrors need to get the image...
It should be there in the next few days.
If you cannot wait, you can do:
svn co http://anonsvn.jboss.org/repos/portal/tags/JBoss_Portal_2_6_0_ALPHA2/
and compile (see the doc)
Note that the released package could be slightly different.
As said Thomas, it's about to be released.
Normally it should be uploaded to sourceforge today and announced next Monday.
It has not been released yet. We found some issues which have been resolved. Once we are done with QA, we will release alpha2 ASAP, hopefully today.