As of my last update in January 2024, there hasn't been any widespread announcement or indication that Frontline Plus is being discontinued. Frontline Plus has been a popular choice for flea and tick control for dogs and cats for many years, and it's still widely available in stores and through veterinary clinics.
However, it's always a good idea to check with your local retailers, veterinary clinics, or the manufacturer directly for the most up-to-date information regarding product availability and any changes in their product lineup.
Companies may occasionally update formulations or packaging, but discontinuations are usually announced with a transition period to allow consumers and veterinarians to make adjustments to their preferred flea and tick control methods.