This may be regional, but here in NYS I just saw a $2k NMAC cash on SV/SL good till end of May. Can be combined with 0% financing:
"0.0 % APR 72 MONTHS
2018 LEAF 0.0% APR financing for up to 72 months and $2,000 NMAC cash for well qualified buyers.
Subject to residency restrictions. Customer may choose (a) special APR with NMAC cash, (b) standard APR through NMAC with NMAC cash. Financing is subject to NMAC Tier 1 through Tier 2 credit approval. $13.89 per month per $1,000 financed at 0.0% for 72 months, on all new above-noted vehicles in dealer stock. NMAC cash available when you finance through NMAC and is subject to credit approval. Down payment may be required. Available on purchase. Must take delivery from new dealer stock. See dealer for details. Offers end 05/31/2018.
 $2,000 NMAC Cash available on 2018 LEAF . NMAC Cash valid 05/25/2018 through 05/31/2018. Available when you finance through NMAC. Subject to credit approval. Down payment may be required. Available on purchase. Must take delivery from new dealer stock. See dealer for details. Subject to residency restrictions."