After much anticipation (on my part), the Church announced today that the Mesa Temple will be closing for renovations from May 2018 through 2020.
I will gather details as they become available. For details on the interior of the Mesa Temple, see here. For a post on changes I would like to see in the renovation, see here. The main changes I would like to see would be a full restoration of the murals (although large parts would just need to be redone entirely) and the restoration of progression (now possible due to a reduction in the temple district size, thanks to new temples in Phoenix, Gilbert, and other areas). I'm sure existing murals will be carefully preserved, as will the temple's current architecture. It's exciting to see what may happen!