The inviting players within a week was the information about the closed Beta V.
The open beta is indeed at 28-29 februari.
But somehow its kinda a semi-open beta since you need to register and have 10 contribution posts ( saw lots of spam post tho). Ofcourse they pick who can enter and not thats why the i think its kinda a "semi-open beta".
People with lower than 10 post still have chance to join in but the chance is slimmer.