My view is that it's a good forum rule to explicitly specify if it's expiring within 60 days as that has a direct bearing on the value of the domain because of any potential additional costs on the horizon - so the seller should report that as part of the sale.
The issue of the 60-day transfer prohibition doesn't, to my mind, have any direct bearing on the domain's value - it's more an issue of convenience/choice for the buyer, so it should be the buyer's responsbility to research on Whois and then make a decision to buy or not.
Just my thoughts...!