I'm with OTWO. They have already laid the groundwork for extending the end to 2034:
w08 02/15 pg. 22 par. 4
An Extended Period of Time
4 The fact that the word pa-rou-si'a refers to an extended period of time harmonizes with what Jesus said with regard to his presence. (Read Matthew 24:37-39.) Notice that Jesus did not liken his presence to the relatively short period of time during which the Flood occurred in Noah's day. Rather, he compared his presence to the much longer period of time that led up to the Flood. Included therein were Noah's building of the ark and his preaching work, right up until the time that the Flood finally arrived. Those events occurred over many decades. In a similar way, Christ's presence includes the events leading up to and including the great tribulation. -2 Thess. 1:6-9.
w08 01/01 pg. 8 Footnote:
Jesus’ statement helps to correct the wrong idea conveyed in the way some Bible versions mistranslate the word “presence.” Some translations render it “coming,” “advent,” or “return,” all of which imply a momentary event in time. Notice, though, that Jesus did not liken his presence to the Flood of Noah’s day, an event in time, but to “the days of Noah,” a climatic period of time. Like that ancient era, Christ’s presence would be a period of time during which people would be too caught up in the day-to-day affairs of life to take a note of a warning being given.
This allows for the 120 years (they will count this from 1914) as OTWO mentioned. I wrote to the WTBTS and asked if they were now going to promote this as the new end date. No Reply (since 1/08) and I'm sure I was not the only one asking this question.
If you want to take the time you can easily take apart the argument they present in par. 4. Luke 17:26-28, which is a parallel account, points to the end as an EVENT not a PERIOD of time.
But, none of this matters, There is an apathy that has set in that is going to be hard for them to overcome. Perhaps more statements from the platform like this one during the SM last night: "If you don't obey the direction from the Branch, when Jesus and the angels perform the separating work you will be marked as a goat." My guess is that we will see more of this instilling of fear and blind obedience will be pushed.
As mentioned, the real toll may well be in the young ones leaving, leaving older ones as the majority. This will take time but it will be interesting to see what they will do to to motivate the flock. Maybe a new slogan: "Keep alive to 2034"
oldseeker