After images of them on-set appeared last week, the first teaser trailer for Trainspotting 2 has dropped — or T2, as it appears to officially be called (let's just ignore the fact that Terminator 2 also used that abbreviation, ok?). And ok, it doesn't actually seem to feature any new footage. But still, it confirms that all the original cast — Ewan McGregor, Ewen Bremner, Johnny Lee Miller and Robert Carlyle — are all returning. It's actually happening and we're excited. 

T2 will be in cinemas in January.