Note that the letter contains a specific request to the GNSO:

‘For example, assuming all other review activities are completed, it would be helpful to understand whether the GNSO believes that the entirety of the current Subsequent Procedures PDP must be completed prior to advancing a new application process under the current policy recommendations. The Board is cognizant that it may be difficult to provide a firm answer at this stage of the process as the reviews are still underway and the PDP is in its initial stages of work, but if any consideration has been given in relation to whether a future application process could proceed while policy work continues and be iteratively applied to the process for allocating new gTLDs, or that a set of critical issues could be identified to be addressed prior to a new application process, the Board would welcome that input.