I just spat out red wine...
"mongooses's involvement it to oversee lore and ensure consistency"
there are not enough rofl emoticons.
The 10 min video tells me no more than I learned from the announcement and looking at the company's web site.
Until someone at mongoose or WLRPG reveal more details all we know is it will be similar to the T20 concept but for 5e.
"it has never lost its identity"
no one can define what it is
it is not the setting, Traveller rules are used for many bespoke settings, not just charted space or the wider galaxy charted space is a very small part of,
it is not 2d6 resolution, see GT, TNE, T4, T5, T20
The closest I can get is Traveller is the tools to run sci fi games:
lifepath character generation
challenging combat
a trading mini game
starship construction
starship combat
planet generation
a range of TLs from stone age to Clarketech
animal encounters based on ecological niche
equipment for each TL
options include psionics, artificial gravity, robots, cybernetics, whatever you can imagine
Traveller can be set in a single system, or with an FTL drive capable of visiting any world in the galaxy, or any lesser tier of your imagination.