Will Magenta Max 55+ be eligible for the $30/month internet deal that was announced yesterday?

The discounted rate is not automatic - you need to call and get the promotion applied. Your plan will still show as $50, but you will see a $20 credit each month once the promotion is processed. It doesn't matter if you have new service or already had service. Also, if you have an older plan that is not Magenta Max, call and find out if your plan qualifies. It doesn't hurt to check. The credit takes 1-2 billing cycles to show up.