OneSimCard has a new 'plus' card. The only difference I can see is that it has lower rates for calls while being in the US or Canada.
The plus card is free to receive calls in the US/Canada instead of $2.50 a minute. Making calls is $0.45 instead of $2.89. It costs more to get, but for some folk it could be worth it. It does not seem to do data either.
onesimcard.com/