The last I heard
Definition 1 of 1
Pro Tip 1/3Information Update
Implies you are sharing the latest available information but may not be current. 
The last I heard, the concert was sold out.
Pro Tip 2/3Uncertain Source
Suggests the information comes from an informal or unofficial source. 
The last I heard, they were still deciding on the venue.
Pro Tip 3/3Conversation Starter
Used to spark a discussion or ask for updates on a topic. 
The last I heard, your brother was applying for colleges.