1: there is one known issue that can
result in an updated installation being unable to start, so if you use
"Sirius" (directly or indirectly) please skim read following
bugs reports to see if you should update to M3 or not ... or there may
be updates to other repositories soon, if not already, that will allow
a safer update.
- M3 Hang during splash Bug 421706
- Can't start Eclipse M3 after installing "everything" Bug 421765
- org.eclipse.sirius requires AND reexports itself
If you are not sure, be sure to make
a back up of your working installation first.
For this same reason, the "Modeling"
EPP Package will not be available for M3.
2: There are some issues using EPP packaged
"apps" on Macs. For discussion and some possible work-arounds,
- Unable to start Luna M3 EPP packages on Mac OSX Mavericks