Wyll got remade by Larian so perhaps he is a Bard now... whatever he ends up as will be untested
all characters have a default pick when you level them up [Ghal is known to be busted] so you can just press 'ok' and move on if making choices isn't your bag
No, Wyll is definitely still a warlock...we've seen footage from the final game about precisely what happens with his physical transformation at the start of the game. Wyll's entire story is VERY strongly tied to him being a warlock and if you change that it will stop making any sense whatsoever. Definitely not a bard.
