I require the End-Of-Life (EOL) and End-Of-Support (EOS) for Elitebooks

I have been tasked with finding the EOL and EOS dates for the following items :

EliteBook 2540P

EliteBook 8530w

EliteBook 8540w

EliteBook 8570w

EliteBook 8760W

Any product found to be outside (or close to) the EOS date will need to be replaced and a vendor matched replacment is required.

I have no other information than that listed within this article and little chance of getting it in order to maintain customer anonymity. 

Thanks in advance