The IESG will be trying something with respect to BoF proposals for IETF 109. We have found, over time, that BoF proposals often come in at the last moment before the deadline, without consultation with the relevant ADs. A result of that is that we have no time to engage with the proponents for more information or for clarification, nor for tuning the proposal. Sometimes, BoF proposals that might otherwise be approved are not approved. What we are doing for IETF 109 is the following: - We are leaving the deadline for BoF proposals as scheduled, 2 Oct. - We are asking for preliminary proposals two weeks earlier, 18 Sept. - We will use the two weeks in between to discuss the proposals with the proponents, as necessary, so that the IESG and the IAB can better understand what’s being proposed, and so that we can provide advice.. The preliminary proposals do not need to be detailed: we need to know briefly what’s being proposed, who the proponents are, and whether the BoF is meant to discuss a working group charter or not. This should be posted to the BoF wiki <https://trac.tools.ietf.org/bof/trac/wiki> and by email to the IESG <iesg@xxxxxxxx>. There’s still two weeks, until the normal deadline, to develop the detailed proposal. We strongly encourage all BoF requestors to submit preliminary proposals. We hope that this will result in fewer surprises, both to the IESG and IAB and to those making BoF proposals. Barry, for the IESG