So only relevant to TPG users on NBN 25Mbs plans (although maybe other ISPs have done the same?). Given they are a popular ISP and this is most popular NBN speed that should be a lot of us.
TPG has scrapped this tier and the 50Mbps tier is the same price. However upgrade is not automatic, so you need to login to your account and change to the new equivalent.
Lets see if it makes a difference, my real speed (http://beta.speedtest.net) is 19.8/4.9 at the moment
UPDATE 2PM, looks like just been updated, now reporting 43.5/17.6.