I see, so what is the difference between this and the former
Changi Airport direct on BNL - BDK?
Last time,the RATIS only showed the destination station and
terminal number, on top of other annoying announcements.

Announcements are played before the train enters the station.
The TV above every individual door (that's 11 x 5 + 1 x 2 = 57 TV
screens) will then flash the colour designated to that terminal -
Green for Lok Ma Chau and Blue for Lo Wu. If you forget, hey geuss
what? At the sides of the TV, there are also coloured plates. Hence
you just match the colour of the plate to the colour of the TV to
get your train's destination. Announcements and scrolling texts are
also played and shown in the train.

Single track? No problem. Bangkok's BTS adjusts the stopping
line for each train going towards either Wongwian Yai or National
Stadium to stop at either ends of the platform. Green for National
Stadium, and Purple for Wongwian Yai. TVs are installed at the 2
black rectangles above.

They've also incorporated the direction of travel along the
entire station length. On top of that, you can check the
destination of the train from the EDS installed at the front and
sides of the train.

Of course, I will have no say in incorporating a new system, and
they might just follow what they did for the Changi Airport
branch.