All three Staten Island depots are receiving Nova LFS' as they have top priority with the order. KB, GH, and UP are not receiving as much as Staten Island combined.
The Bronx is out of the question as Kingsbridge and Gun Hill are in line to receive the new Nova LFS'.
Unless these are just temporary loaners to Flatbush, these might end up in Queens Village but that's over thinking for these few 1998 units.
1) 4630 is a Orion VII Next Gen hybrid. Their numbers range from 3800-4272 and 4330-4702.
2) There are always XD60's on the Bx12 +Select, and yes there are some MTA buses in that shuttle.
3) 1002 Showing up on the M15 +SBS is just a glitch from BusTime. Its been happening lately since the Local and SBS were split up.
Even with 32 units, not all of them go out in service at the same time mostly since some are held in the depot for repairs. They use hybrids on that route everyday, but that's still running short due to the cold weather.