The previous time I'd been there a few months ago, I asked some stallholders where they were moving to, but all of them said they didn't know and to ask later.
Earlier this month, the Straits Times published an article: Time's up for foodie haunt in Lavender which contained information on where some stalls were moving to. Unfortunately this list was very incomplete with only 9 entries.
So here is my version, collected on the ground from signs and asking the stallholders. If you have information about stalls that were closed when I went, or which hadn't found a new location yet (or which are no longer in the supposed new locations listed below), do leave a comment or email me so I can update this list.
"Seafood" - Block 803 King George Avenue (really nearby). Tian Xiang Kopitiam, from 1st October 2014
Poly Western Food & Fried Rice (which has awesome chicken wings) - Block 803 King George Avenue (really nearby). Tian Xiang Kopitiam, from October 2014
Soup King - closing, but they have another outlet at 313's Food Republic
Bugis Street Char Kway Teow - Broadway Coffee Shop, 100 Tyrwhitt Road (Jalan Besar Stadium)
Macpherson Barbeque Seafood (Jackson Market) - 411 Balestier Road (Balestier Market) #01-03, from October
Confusingly, there was another, smaller, sign in Mandarin which gives another address of 539, Bedok North Street 3, #01-619 (I think this is another outlet)
Ah Long Pancake (which has fantastic freshly made, thin and crispy ban chang kuih) - Lavender Food Hub @ ZhuGe Liang (27 Foch Road #01-02 Hoa Nam Bldg - really nearby), original outlet to close on 25th September
Eminent Frog Porridge - Lavender Food Hub @ ZhuGe Liang (27 Foch Road #01-02 Hoa Nam Bldg - really nearby). The man excitedly informed me that the new place would be air conditioned.
HZL (好再来) Korean Food - 100 Tyrwhitt Road, Jalan Besar Sports Complex #01-05, from 1st October 2014
Chicken Rice - Lavender Food Hub @ ZhuGe Liang (27 Foch Road #01-02 Hoa Nam Bldg - really nearby)
Albert Street Prawn Noodle - as you can see from the queue, they were busy so I didn't ask. Apparently there's another outlet at Old Airport Road Food Centre, 51 Old Airport Road, #01-10
Addendum: @cknewsstand on instagram was there on 15th September and they didn't know where they would go. They said to check their Facebook page which you can follow for updates
Kok Kee Wanton Noodles - as you can see from the queue, they were busy so I didn't ask. The Straits Times reported in early September that they hadn't found a location yet.
Addendum: According to @eleventhour on instagram, "They said they're gonna be taking a break before they decide what to do next". However according to my friend who heard it from the horse's mouth, "they say they are retiring".
Miow Sin Popiah, Carrot Cake - Balestier Food Centre (beside Boon Tong Kee), i.e. 411 Balestier Road (Balestier Market), closed after 28th September 2014, opening on 1st October 2014
Lian Hua Chun Fruits Trading - closed - online says 506 Jurong West Street 51, Singapore 640506
Mun Chee Kee Pig's Organ Soup - closed - unknown (there's a similar stall Cheng Mun Chee Kee Pig Organ Soup/Authentic Mun Chee Kee Pig Organ Soup nearby at 24 Foch Rd)
Chong Pang Huat BBQ Chicken Wings - 27 Foch Road #01-02 Hoa Nam Building, from 23rd September 2014
Old Bibik's Traditional Peranakan Rendang - closed and looks like they moved out. The Straits Times reports the new location is MDIS Building, 190 Changi Road, #01-01, and is "a 60-seat restaurant cum photo gallery" (whatever that is), from 1st October 2014.
Chinatown Beef Noodle - they have 6-7 other outlets, including one in Jinsha (wherever that is)
Addendum: "the original famous beef noodle stall before this one took over is gone, the new one is terrible in comparison"