Eclipse Juno is worse than Indigo. The interface is less responsive and more annoying. For instance the files are always opened in the right window and and not in he cursor one. They have to be dragged and dropped to the location but!!!... placing them in a separate/desired window requires more effort because Juno seems to place it in the most unwanted one; also, tabs can be placed harder. More annoying things come with debugging. Sorry for the developers but is crap - many times it does not to find the file in which the breakpoints are located.
I do not recommend the upgrade.