Telling our son aged 10 that he has Autism

Hello all – I'm sure this topic has come up before, so apologies if this is going over old ground. Our 10 year old son was diagnosed last year and the next step we feel is to tell him. We've heard from some parents in the same boat that telling them is a weight lifted as it gives them an explanation for their 'differences'. Just wondering if anyone can offer any advice or their experiences, I'm sure every case is different. Thanks in advance, Cilhaul.