“With two options available: launch as is and just deal with it in ‘post,’ or delay a few weeks to avoid some of the issues we’ve run into in the past, we’ve chosen the option that will result in what we hope is much more polished update,” Trion posted. “We get the question all the time: ‘Why can’t you just hold it until it’s ready?’ Whelp, we are!”
This decision may be reflective of Trion’s goal to “bring back the quality” to the game in 2017. RIFT’s Patch 4.1 will contain a new raid, eternal weapons (and associated quest line), the looking for raid tool, an intrepid challenge, and hundreds of additional housing options.
Source: Official forums. Thanks GreaterDivinity!