Heads up, MetroPCS customers, because it looks like your carrier's got something up its sleeve. MetroPCS took to its official Twitter account this morning to tease a "huge announcement" that it's got planned for next week. Attached to the tweet are the hashtags #Samsung, #Android and #MetroPCS, as well as a Vine video that shows a Samsung Galaxy S III followed by a plus sign, the number "1," an equals sign and a question mark. The Vine video is embedded below.

While MetroPCS doesn't come out and say exactly what its planning to announce next week, the combination of hashtags and the Vine video suggest that the carrier plans to begin offering the Samsung Galaxy S 4. The Galaxy S 4 is already available on a number of other U.S. operators, including prepaid carrier Cricket Wireless and MetroPCS parent company T-Mobile US, and so it'd definitely be good to see Samsung's flagship land on MetroPCS's shelves as well. Now we just have to wait for Metro's announcement next week to get the full rundown on the carrier's plans.

We've got a huge announcement coming next week. Can you guess what it is? #Samsung #Android #MetroPCS http://t.co/4dOgjRNPW0

— MetroPCS Inc. (@MetroPCS) July 5, 2013

Via @MetroPCS