World traveler plus
 

Is there a way to tell what aircraft have the new upgrade? Sorry I did a search but couldn't find it.

All 787, 380 and 777-300 have the new Traveller plus seats

Some retrofitted 747 also have that, but would need to do a wider search for the exact aircraft

Where are you planning on going? There's certain routes that it is almost confirmed as older (ex Gatwick, BKK etc etc)

With regard to the 777, if you make a dummy booking (go as far as seat selection, but before making payment) and the WT+ cabin is showing 4 rows but not 5, then it's one of the nine 777 200ER aircraft that are not refurbished. These are G-YMMG to G-YMMP.

It should be mentioned that the retrofitted 747 product is not the same as new WTP on 787, 380, 777.

The IFE is better but the seating is much the same as the old version with new covers. It didn't seem to me that the cushions had been replaced.

Also have a look at these:
http://www.flyertalk.com/forum/briti......-guide.html
http://www.flyertalk.com/forum/briti...r-plus-24.html
http://thebasource.com/product.html#premiumeconomy