Nope. Maybe it is to do with the upcoming devaluation? (a rush of bookings). But TG has been patchy for the last couple of months. First with UA pulling it outright, then once they brought it back it was pretty much the end (possibly people with UA miles snapping them up when they got the chance).
Or possibly TG is just wanting to get better yields. If everyone knows they can get cheap seats without paying full price... well.. no one pays full price (or very few). TG has an extraordinarily generous FF policy - up to 8 seats in business class are released as a starting point. Out of a small cabin that quite a lot of seats.
As it stands, TG is pretty much on par with the like of QF in terms of availability... almost none