The way to tell if the seat map is the old A343 config is by counting how many Upper seats there are across the cabin on your seat map.
If it's 3 (A D K)- then is an UCS A343
If it's 6 (AC DG HK) - then it's a J2000 A343 (G-VSUN)
There's also only 4 rows of PE on G-VSUN and 5 rows on all the other A343's.
The seats are the old style fabric covered PE seats with no leg rests, which where the same as what used to be on all the other A343 A/C before they where replaced with the brand new leather ones.
The message on the VS web site has now also been updated:
PASSENGERS TRAVELLING TO NAIROBI
For Passengers travelling Upper Class to Nairobi from 2 September 2007, please note the aircraft scheduled will be the Airbus A340, which has the lie flat seat. This will be for a temporary period only.
Regards