I did notice that they cleared up any maximum size confusion by changing the max size from 72" x 72" to an 80" diameter.
Code:
<R16> Once the MATCH has started, the ROBOT may assume a PLAYING CONFIGURATION
that exceeds the size dimensions specified in Rule <R11>. While in the PLAYING
CONFIGURATION, the ROBOT may expand up to a maximum horizontal dimension of 80
inches (e.g. all parts of the ROBOT must fit within an imaginary 80-inch-diameter upright
cylinder). There are no height limits for a ROBOT in its PLAYING CONFIGURATION at any
time after the start of the MATCH other than those specified in Rule <G36> about not
exceeding the maximum permitted height while in the opponent’s HOME STRETCH.
That makes things a lot easier to understand and it is one good thing FIRST has done to clear up confusing rules.