My Mika, who will be 7 yrs. in August, had a vet check up yesterday and has gained a few, but is still deemed to be in excellent condition.....weighing in at 66.6 lbs.
My Greta, who will be 4 yrs. in October, weighed in at a healthy 60 lbs. even, but I think she still has some filling out to do. I sort of expect her to also top out at around 65 lbs.
Happy to say, that after a thorough health exam, the vet was thrilled with their condition/health and was impressed with both.