I'm not sure many Lubavitchers are thinking about גימ"ל תמוז as much as Rabbi Tzvi Hersh Weinreb and the Jewish Action

As least not in an as serious אופן as RTHW. First he speaks to Steve Savitsky.

Then he wants us to know about the Torah. The Rebbe's Torah. Because truthfully the Rebbe's Torah - as is true every Tzaddik - is the means by which to connect to him. It's nice to hear stories and mofsim and even to be inspired by the בכיות on a גרינעם מיטוואך. But it's all about the Teyreh. Then I happen to open the Jewish Action today and what do I see? 20 pages and a special section on the Rebbe! The section entails the following:

1) An unparalleled leader - Rabbi Jonatan Sacks
2) Why the Lubavitch movement thrives in the absence of a living Rebbe
3) The Rebbe and the Rav - Rabbi A. Rakeffet-Rothkoff
4) The Contribution of the Lubavitcher Rebbe to Torah Scholarship

It's just nice to see.

Weinreb JA Rebbe 20 Years

"The Rav and the Rebbe" - Rabbis Zalman Posner and Aron Rakeffet at an OU convention back in '94

Rabbi Posner ע"ה (his introduction, rather) starts at about 29 minutes.