Tried the leaked firmware... I wasn't expecting big difference but am disappointed not to see "open link in background" in microb... I thought this was implemented.

There're basically zero visible changes.
1) Map... supposedly there's minor update but it's probably really minor I don't see.
2) hildon-desktop & modest: Latest git version as expected.
3) Microb: No "open link in background" option.

Don't hold your breath...