Staying low due to the logistics of "declaration," aspects of the question criteria (and the fact this is a continued war). However "new front" is questionable. (Read more below).
Israel is going to engage in a "limited ground invasion." I believe the terminology of "limited" is a purposeful descriptor - as it delineates this is not an all-out-war, but one that has objectives and goals and a stopping point.
Israel's Defence Minister has stated "I believe we are at the start of a new phase in the war." Which verbiage reveals this is not going to be a new war, but the same war Israel has already been involved in.
However, the "more details" section of the question's resolution criteria informs the question will close as "yes" if there is a "new front." The information from Google AI, and wikipedia provide multiple situations that describe "front." So, it is uncertain if a ground incursion into Lebanon as a "new phase" is the same thing as a "new front."
EDIT: More details states "(e.g., announcing the opening of a new front against Hezbollah), the situation regarding opening a new front apparently needs to be "announced." I don't think they will be announcing a new front. Thus, moot point.
Israeli defence minister announces 'new phase in war' moving north
https://youtu.be/DKGomxrrkxM?si=HmoImD4MsrBDfSD_
Front (military)
https://en.wikipedia.org/wiki/Front_(military)#cite_note-DOD-1
It is already been stated Israel is now fighting battles on "3 fronts" and the question hasn't closed, so it appears that this is all the same war towards multiple Iranian proxies with different gang names.
Global National: Sept. 29, 2024 | Middle East conflict grows to 3rd front as Israel strikes Houthis
https://youtu.be/YT_V6rqnuj8?si=0bJbeRAKLWUjseXm
This question is wreaking havoc on my brier score. But, not being a group think person or crowd follower it is what it is.
I'm 100% certain Israel will conduct a limited ground invasion, they area calling an "operation" and a "new phase." But, I'm not certain this equates to a declaration of war, announcement of a new front, or the need to authorize military steps in battle (they already authorized steps).
https://www.abc27.com/national/israels-security-council-country-at-war-with-hamas-significant-military-steps-authorized/