Early Access to Three Minute Long Videos
Only people who have been chosen to receive early access to the three-minute long videos will be able to produce and upload them onto their account.
Meaning of "W" on TikTok
W is a popular term in sport and gaming. When someone simply puts a "W" in the comment section, it means they’re saying "Win" or congratulating someone on their success. It’s the opposite of someone taking an "L," which means to lose.
TikTok Testers
The other two screenshots basically invite users to become “TikTok Testers”, which means that users will be able to get sneak peeks of new features and test new versions of TikTok before their official roll-out. The option to join testers is available in the “Privacy and settings” section.