Try to not correct grammar.
I won't pretend to know how easy it is to set up a mass mail out to people.
That said, 10/12 months that this letter would have applied to would be covered under Cataclysm. Statistically speaking it'd be quite relevant.
Sure a custom letter tailored to this would have been nice, but we didn't get it. Oh well. They're doing other things (Like 5.1). They have bigger fish to fry. At the end of the day, week, month, year you'll remember nothing about it and it'll have no outlasting harm.