Question about the F-22 and it's radar.

Gotta question about the following:

""USAF officials also rejected the forecast that the service will need
to spend $11.7 billion to introduce air-to-ground capabilities in the
F/A-22. Roche says planned upgrades, including a new radar and
small-diameter bomb, are budgeted and would cost less than $3.5
billion. . . ""



So when they say "new radar" are the talking about replacing the
APG-77 with an APG-XX or are they just talking about new software or a
mod of the -77? I'd ask what the hell they need a new radar for as
the F-22 itself is not even in service yet and it's *current* radar
should be considered "new" but seeing how it's been over a decade
since the YF-22 flew it's no wonder.