As part of the 15-year celebration, there's a cape players will be able to obtain that has the Minecraft logo stylized to look like the TikTok logo. This will be released alongside one for Twitch, as well, which has a purple heart styled onto it. These are just two of the various cosmetic items that will be available for players to commemorate the anniversary.
To get the TikTok cape, you'll have to watch a streamer on TikTok who is partnered with Minecraft to do drops. There are only a select few who will have this cape available as part of their streams, so you'll want to make sure you're watching the right creators if you want this cosmetic item.
The same parameters apply to those who want the Twitch cape. Look for a creator who has Minecraft drops enabled for their stream. These streams should have a specific code that you can then redeem on the Minecraft website. Make sure you're logged into your Microsoft account on the website when you redeem so it will automatically be added to your account.
The Twitch cape is available to players starting May 15, while the TikTok cape won't be available until May 18. The code for the TikTok cape can be redeemed until June 18, while Twitch codes will be good until June 30. Unfortunately, these capes are only available for Bedrock users, meaning those playing on platforms other than PC will not be able to secure these capes.