I don't understand what's the problem.
For the map you are using now (2013.41) the gmap3d.img was compiled by Garmin on 21.03.2013
If you want to be more frustrated or just accept things as they are, read the following:
Garmin is compiling map data from Navteq.
Navteq has now released its 2013.Q2 version
Navteq's official sites (here.com and mapreporter.com) use 2013.Q1
Garmin's current 2013.41 is Navteq's 2012.Q3
Garmins new 2014.10 (not officially released yet) is Navteq's 2012.Q4
So the "new" Garmin 2014.10 is six months behind Navteq's current version.
The last changes and additions to this map were implemented up to ....September 2012 !!!
And Garmin is the biggest outside customer of Navteq.
Navteq is owned by NOKIA since 2007 and fully merged into NOKIA since 2011.