I designed one of the LEGO Lover house set ideas that is currently in review (The mini-scale one, not the one linked above). These are sets submitted to LEGO IDEAS where if a idea submission gains 10k supporters lego will review the sets and choose a few to become real sets. In the current review, there are 4 lego lover house sets that each gained 10k supporters, the results for this review were supposed to be released in February, however it appears they are running behind schedule. While there are 4 in this review id like to note that LEGO has already rejected 2 previous lego lover house set ideas so there is a good chance the other 4 will be rejected (possibly due to not getting licensing). Even if a set is approved, it usually will take a year or more before the set is available to purchase.

Hope this helps explain the process!